1.) The PRO is a good mobo, but if you're not going to use all of its features, get a cheaper mobo.
2.) Get 8GB of RAM, but if you really want 16GB, then get it, but 8GB is the betetr option.
3.) Getting 2x 680's is a bad idea. 2x 670's will save you $200 and you'll get 90% of the performance.
4.) Get Windows 7 Home Premium. Professional doesn't offer any substantial benefits.
I have a WD, and I've used several of their HDD's. They're good. Generally, Seagate has a higher failure rate.
I have 16gb of RAM because people tell me it help with rendering.
Ill switch to home premium
Does VRAM actually help in higher resolutions. i plan to use nvidia surround and people you ned more VRAM. is this true??